A History of the Eastern Roman Empire from the Fall of Irene to the Accession of Basil I. (A. D. 802-867)

according Ancyra appeared Arabic army arrived attack authority battle beginning Boris Bulgarian Byzantine Caliph called captives century Charles Christian chronicle Church command Constantine Constantinople Cont death described designs Eastern embassy Emperor Empire enemy Euphemios evidence expedition fact fleet followed forces fortress frontier Genesios George gives governor Greek hand Imperial important influence interest island Italy Khazars king known later learning letter Lewis lived Magyars Mamun Manuel marked means mentioned Michael Nicephorus original palace pass Patriarch peace perhaps period Persian Photius probably reached recorded region reign relations river Roman Russians Saracens says seems sent Sicily siege Simeon Slavonic Slavs soon story success suggests suppose Tabari taken Theophilus tion took town treaty Vasil'ev walls western writer